Tag Archives: nature of science

Somewhere out there, there might be a different version of you—or maybe trillions of different yous. How could that be? String theory suggests that other universes exist alongside our own.

While it’s unclear if we might ever be able to lift the veil between realities, depending on what kind of amalgamation of universes we exist in, it might be possible for us to see evidence of parallel realities. World Science Festival co-founder and Columbia University physicist Brian Greene explains how in the video above.

By: World Science Festival Staff

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Imagine having the nerve to argue against Stephen Hawking – certainly the best known and one of the most brilliant theoretical physicists of our time. Physicists Gerard ’t Hooft and Leonard Susskind disagreed with Hawking’s theory of the ultimate fate of black holes. Hawking had proposed that as matter falls into a black hole, the black hole emits particles which have become known as Hawking radiation. Eventually, this process causes the black hole to disappear and with it, any information about the matter that fell into it. Hooft and Susskind agreed with the mathematical basis of Hawking’s theory but couldn’t accept the physics. In this video, Hooft and Susskind describe the delicate dilemma they faced in challenging Hawking. Their story is an excellent example of the importance of questioning in the nature of science.